additional html data attribute for custom javascript callback

I am working on a project with a need to control the recaptcha widget behaviour on IOS mobile browsers with custom javascript callback. For our use case, when you tap the checkbox to verify that you are not a robot, the page scrolls to bottom while the verification continues at the top.

In order to control recaptcha response that is causing this issue, Google recommends adding an optional data-callback that will pass an additional token to the g-recaptcha-response . To achieve this, we need to pass additional data attribute to the recaptcha widget markup.